atmel_lcdfb: add fb_blank function

Signed-off-by: Andreas Bießmann <biessmann@corscience.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

drivers/video/atmel_lcdfb.c

@@ -714,11 +714,35 @@ static int atmel_lcdfb_pan_display(struct fb_var_screeninfo *var,
 	return 0;
 }
 
+static int atmel_lcdfb_blank(int blank_mode, struct fb_info *info)
+{
+	struct atmel_lcdfb_info *sinfo = info->par;
+
+	switch (blank_mode) {
+	case FB_BLANK_UNBLANK:
+	case FB_BLANK_NORMAL:
+		atmel_lcdfb_start(sinfo);
+		break;
+	case FB_BLANK_VSYNC_SUSPEND:
+	case FB_BLANK_HSYNC_SUSPEND:
+		break;
+	case FB_BLANK_POWERDOWN:
+		atmel_lcdfb_stop(sinfo);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* let fbcon do a soft blank for us */
+	return ((blank_mode == FB_BLANK_NORMAL) ? 1 : 0);
+}
+
 static struct fb_ops atmel_lcdfb_ops = {
 	.owner		= THIS_MODULE,
 	.fb_check_var	= atmel_lcdfb_check_var,
 	.fb_set_par	= atmel_lcdfb_set_par,
 	.fb_setcolreg	= atmel_lcdfb_setcolreg,
+	.fb_blank	= atmel_lcdfb_blank,
 	.fb_pan_display	= atmel_lcdfb_pan_display,
 	.fb_fillrect	= cfb_fillrect,
 	.fb_copyarea	= cfb_copyarea,